Low-temperature operation of perovskite solar cells: With efficiency improvement and hysteresis-less. (September 2016)

• Record Type: Journal Article
• Authors: Ginting, Riski Titian; Jung, Eun-Seon; Jeon, Mi-Kyoung; Jin, Won-Yong; Song, Myungkwan; Kang, Jae-Wook
• Is Part Of: Nano energy. Volume 27(2016:Sep.)
• Page Start: 569
• Page End: 576
• Publication Date: 2016-09
• Subjects: Perovskite solar cells -- Low-temperature operation -- Hysteresis-less -- Efficiency improvement -- ZnO electron transporting layer; Nanoscience -- Periodicals; Nanotechnology -- Periodicals; Nanostructured materials -- Periodicals; Power resources -- Technological innovations -- Periodicals; Nanoscience; Nanostructured materials; Nanotechnology; Power resources -- Technological innovations; Periodicals; 621.042
• DOI: 10.1016/j.nanoen.2016.08.016
• Languages: English
• ISSNs: 2211-2855

Abstract

Abstract: Methylammonium lead iodide perovskite solar cells (PSCs) based on a solution-processed ZnO electron transporting layer were systematically investigated at low-temperature operating conditions. The power conversion efficiency gradually improved from 14.2% to 15.5% as the temperature decreased from 298 to 253 K, mainly owing to increments of short circuit current density and open circuit voltage. In addition, the improvements in photocurrent related to the high charge carrier mobility, owing to the ideal nondispersive charge transport and fast electron transport lifetime at low temperature. Strikingly, hysteresis was suppressed with decreasing temperature related to the inhibition or relatively slow of ionic migration at reversed poling direction. This finding shows promising result of PSCs working efficiently under low temperature condition. Graphical abstract: Highlights: Under low-temperature operation, the efficiency of perovskite solar cell improved from 14.2% to 15.5%. Hysteresis was suppressed with decreasing temperature. To reveal the mechanisms underlying the observed improvements, the structural, optical, and electrical properties of the solar cells was characterized.